3398-Lingap Oct2001 Update

8/9/2019 3398-Lingap Oct2001 Update

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MSC/NASTRAN V70.5+Linear Gap Capability

page 1

“Linear Gap”

Ne Capability Se!inar

"#t$ber %001


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MSC/NASTRAN V70.5+Linear Gap Capability

page %

Linear Gap&

'(at is a “linear gap”)'(y *$ ant linear gap&)

'(at i& t(e$ry/i!ple!entati$n),atran inter-a#ea!ple&

Li!itati$n&C$n#l &i$n&


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage

'(at i& a “linear gap”)

T(e linear gap i& a #$nta#t ele!ent in it&&i!ple&t -$r!2

– 3"4 t$ 3"4 gap& it( initial $pening&

– Linear6 t(ere-$re *$e& n$t in#l *e2• -ri#ti$n• large *i&pla#e!ent&• !aterial n$n linearity

&e& iterati8e &$l8er t$*eter!ine $pen/#l$&e* &tat &.

Node 3Node 3

XX

YY

Node 2Node 2

P = 30 lbs.P = 30 lbs.

UUgapgapNode 1Node 1 UUinitinit


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage 9

'(y *$ ant linear gap&)

S ##e&&- l analy&i& ill &e pr$perb$ n*ary #$n*iti$n& an* l$a* pat(&.

Linear gap& #an &$l8e a large #la&& $-pr$ble!&• :eel t$e intera#ti$n• :$le bearing• Si!ple #$nta#t&

– ;ri*ge S pp$rt& – 4itting #$nta#t&

– --i#ient (en #$!pare* t$ n$nlinear !et($*&


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T(e$ry / !ple!entati$n

T(e linear gap& pr$8i*e -$r &i!ple#$nta#t6 & are &e* t$ *e-ine t(e gap& – T(e *i&pla#e!ent& an* !p#-$r#e& are &e* t$*eter!ine i- ea#( gap i& “ el*e*” $r “-ree”

• 3i&pla#e!ent #riteria2 n$ penetrati$n


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage B

Node 3Node 3

XX

YY

Node 2Node 2

P = 30 lbs.P = 30 lbs.

UUgapgapNode 1Node 1 UUinitinit

D

y


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T(e$ry / !ple!entati$n

S," NT& are *e-ine* -$r gap an* init SPOINT 55 155

S ,"RT p t& S," NT 55 < gap = in t(e R &et -$r iterati$n.SUPORT 55 0 S,C *e-ine& initial gap $pening @.05 < init =SPC 101106 155 0 .05

M,C ntry2 < E. $- !$ti$n2 y1 y% + gap init @ 0=F SID G1 C1 A1 G2 C2 A2

MPC 101106 3 2 1.0 2 2 -1.0

F G3 C3 A3 G4 C4 A455 0 1.0 155 0 -1.0


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage

MSC.,atran nter-a#e

,CL tility *e8el$pe* t$ ea&ily #reatelinear gap& an* rite appr$priateMSC.Na&tran inp t entrie&.

– a&y Creati$n/3eleti$n $- linear gap& – &e- l grap(i#& -$r 8i& aliHati$n – Spe#ial Veri-i#ati$n –

Create& #$!plete6 r n rea*y6 MSC.Na&tran I$b – St$re& gap& $n MSC.,atran *b• Se&&i$n -ile & pp$rt


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage J

nitial $pening *e-ine*by n$*al *i&tan#e


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nitial A&& !pti$n2"pene* $r Cl$&e*

nitial $pening *e-ine*by n$*al *i&tan#e


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Gap 3i&play2N$ "pti$n&

Gap 3i&play2All "pti$n&


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage 1%

3 L T NG GA,S


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CR AT NG ";


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- any L;C &= (a8e beena**e* * ring t(e &e&&i$n6“Rel$a*” t(e -$r! an* &ele#tappr$priate b$ n*ary#$n*iti$n&

“Re#(e# &” any !$*el#(ange& relate* t$ M,Can*/$r S,C #(ange& &in#l *e R;AR6 R; %6 R; 6et#.=

V R 4D NG GA,S


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L ;ra# et :eel T$e Analy&i&

1.0”

.0”

%.0”

0.%5” T(i#Al !in !

100 ,$ n*&

S(ear ;$lt @ .%9 3ia!eter S(ear :$le@ .%50 3ia!eter Linear gap& *e-ine* in ra*ial*ire#ti$n t$ *i&trib te bearingl$a*

Ten&i$n ;$lt2 0.5 in#(e& l$ng6 .%50 3ia!eter6atta#(e* t$ plate it( R; an* -i e* at b$tt$! “Gap t$ Gr$ n*” al$ng b$tt$! & r-a#e


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage 1B

4$r#e Tran&-er at S(ear ;$lt

4$r#e Tran&-er at Ten&i$n ;$lt

L$#al Stre&&3i&trib ti$n

L$#al Stre&&3i&trib ti$n


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nter-eren#e 4it

,late 5 9 .1.500 ($le .90 -r$! e*ge,in .50B *ia .1 t(i#


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage 1J

Li!itati$n&

Re!e!ber “&i!ple gap&” $nly – N" LARG 3 S,LAC M NTS – N" 4R CT "N – N" MAT R AL N"NL N AR TD

"t(er i&e &e S"L 10B it( CGA,/,GA, – it( $r it($ t ,ARAM6LG3 S, – it( $r it($ t MATS1 – et#.


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage %0

A**iti$nal n-$r!ati$nMSC.Na&tran V70.5 Relea&e G i*eK Se#ti$n .56 *$ nl$a* -r$!2(ttp2// .!e#(&$l ti$n&.#$!/& pp$rt/*$# !entati$n/in*e .(t!l

M#C ll$ g(6 $(n an* ,r$#t$r6 Lan#e6 “L"CAL ANALDS S "4 4AST N R:"L S S NG T: L N AR GA, T C:N"L"GD "4 MSC/NASTRAN6”

1JJJ MSC Aerospace Users’ Conference. 3$ nl$a* -r$!2 (ttp2// .!e#(&$l ti$n&.#$!/& pp$rt/library/a #JJ/


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MSC/NASTRAN V70.5+Linear Gap Capabilitypage %1

C$n#l &i$n

Si!ple gap #$nta#t i& a8ailable in S"L 101 $-MSC.NASTRAN V70.5 $r later.

– C$n&traine* 3i&pla#e!ent T Rati8e te#(niE e

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3398-Lingap Oct2001 Update